public code v1
This commit is contained in:
Francisco Jesús Martínez Mimbrera
+405
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package flintstones.helper.extensionpoint;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.Set;
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import org.eclipse.core.runtime.CoreException;
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import org.eclipse.core.runtime.IConfigurationElement;
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import org.eclipse.core.runtime.IExtensionRegistry;
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import org.eclipse.core.runtime.Platform;
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import org.eclipse.e4.core.contexts.ContextInjectionFactory;
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import org.eclipse.e4.core.contexts.IEclipseContext;
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import flintstones.entity.extensionenum.ExtensionEnum;
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/**
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* The Class BaseRegistry.
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*/
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public class BaseRegistry {
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/** The registers. */
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private final ArrayList<ExtensionRegistry> registers;
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/** The extension point. */
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private final String extensionPoint;
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/** The label id. */
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private String label_id = "uid"; //$NON-NLS-1$
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/** The label implementation. */
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private String label_implementation = "implementation"; //$NON-NLS-1$
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/**
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* Instantiates a new domain service provider.
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* @param extensionPoint The extensionPoint
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*/
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public BaseRegistry(String extensionPoint) {
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this.extensionPoint = extensionPoint;
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this.registers = new ArrayList<>();
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this.loadRegisters();
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}
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/**
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* Gets the registry id.
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*
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* @return the registry id
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*/
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public String getRegistryId() {
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return this.extensionPoint;
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}
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/**
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* Load registers.
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*/
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private void loadRegisters() {
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IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
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IConfigurationElement[] extensionElements = extensionRegistry.getConfigurationElementsFor(this.extensionPoint); // Domain.EXTENSION_POINT
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Arrays.stream(extensionElements)
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.forEach(this::loadRegistry);
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}
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/**
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* Load registry.
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*
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* @param extensionElement the extension element
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*/
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private void loadRegistry(IConfigurationElement extensionElement) {
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ExtensionRegistry registry = new ExtensionRegistry(extensionElement);
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this.registers.add(registry);
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}
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/**
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* Gets the first registry where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @return The first ExtensionRegistry with the given key,value, null if the value does not exists for the given key. If the ke
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*/
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public ExtensionRegistry getFirstRegistryWhere(ExtensionEnum key, String value) {
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return this.getFirstRegistryWhere(key.toString(), value);
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}
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/**
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* Gets the first registry where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @return The first ExtensionRegistry with the given key,value, null if the value does not exists for the given key. If the ke
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*/
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public ExtensionRegistry getFirstRegistryWhere(String key, String value) {
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for (ExtensionRegistry er : this.registers) {
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if (er.getAttribute(key) == null)
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throw new InvalidKeyIdentifier(key,value);
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if (er.getAttribute(key)
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.equals(value))
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return er;
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}
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return null;
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}
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/**
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* Gets the all registries where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @return all the ExtensionRegistry with the given key
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*/
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public ExtensionRegistry[] getAllRegistriesWhere(ExtensionEnum key, String value) {
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return this.getAllRegistriesWhere(key.toString(), value);
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}
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/**
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* Gets the all registries where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @return all the ExtensionRegistry with the given key
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*/
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public ExtensionRegistry[] getAllRegistriesWhere(String key, String value) {
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ArrayList<ExtensionRegistry> erl = new ArrayList<>();
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for (ExtensionRegistry er : this.registers)
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if (er.getAttribute(key)
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.equals(value))
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erl.add(er);
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return erl.toArray(new ExtensionRegistry[erl.size()]);
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}
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/**
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* Gets the all attributes where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @param attribute The attribute to get from the obtained registers
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* @return An array with the wanted attribute from the registers where key=value.
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*/
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public String[] getAllAttributesWhere(ExtensionEnum key, String value, ExtensionEnum attribute) {
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return this.getAllAttributesWhere(key.toString(), value, attribute.toString());
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}
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/**
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* Gets the all attributes where.
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*
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* @param key The key of the item you are looking for
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* @param value The value of the key.
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* @param attribute The attribute to get from the obtained registers
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* @return An array with the wanted attribute from the registers where key=value.
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*/
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public String[] getAllAttributesWhere(String key, String value, String attribute) {
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ExtensionRegistry[] arr = this.getAllRegistriesWhere(key, value);
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return Arrays.asList(arr)
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.stream()
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.map(k -> k.getAttribute(attribute))
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.toArray(String[]::new);
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}
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/**
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* Gets the all registries.
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*
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* @return Every ExtensionRegistry available.
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*/
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public ExtensionRegistry[] getAllRegistries() {
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return this.registers.toArray(new ExtensionRegistry[this.registers.size()]);
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}
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/**
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* Gets the all attributes.
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*
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* @param attr The attribute of the ExtensionRegistry you are looking for
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* @return The value for the given attribute of every ExtensionRegistry.
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*/
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public String[] getAllAttributes(ExtensionEnum attr) {
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return this.getAllAttributes(attr.toString());
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}
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/**
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* Gets the all attributes.
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*
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* @param attr The attribute of the ExtensionRegistry you are looking for
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* @return The value for the given attribute of every ExtensionRegistry.
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*/
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public String[] getAllAttributes(String attr) {
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ArrayList<String> attrs = new ArrayList<>();
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for (ExtensionRegistry er : this.registers) {
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String val = er.getAttribute(attr);
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if (val != null)
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attrs.add(val);
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}
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return attrs.toArray(new String[attrs.size()]);
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}
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/**
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* Gets the all attributes unique.
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*
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* @param attr The attribute of the ExtensionRegistry you are looking for
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* @return The value for the given attribute of every ExtensionRegistry, deleting the duplicated ones.
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*/
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public String[] getAllAttributesUnique(ExtensionEnum attr) {
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return this.getAllAttributesUnique(attr.toString());
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}
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/**
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* Gets the all attributes unique.
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*
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* @param attr The attribute of the ExtensionRegistry you are looking for
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* @return The value for the given attribute of every ExtensionRegistry, deleting the duplicated ones.
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*/
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public String[] getAllAttributesUnique(String attr) {
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return this.unique(this.getAllAttributes(attr));
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}
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/**
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* Gets the attribute from an ExtensionRegistry id
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* @param attrId The ExtensionRegistry id
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* @param attr The attribute you are looking for
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* @return
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*/
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public String getAttributeFromId(String attrId, ExtensionEnum attr) {
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ExtensionRegistry extensionRegistry = this.getFirstRegistryWhere(this.getLabel_id(), attrId);
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return extensionRegistry.getAttribute(attr);
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}
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/**
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* Unique.
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*
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* @param arr An array of items
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* @return The same items without repeats
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*/
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private String[] unique(String[] arr) {
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int end = arr.length;
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Set<String> set = new HashSet<>();
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for (int i = 0; i < end; i++)
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set.add(arr[i]);
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return set.toArray(new String[set.size()]);
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}
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/**
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* Instantiate.
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*
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* @param id The ID of the extension registry to instantiate
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* @return The instantiated item
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*/
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public Object instantiate(String id) {
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return this.instantiate(id, null);
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}
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/**
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* Instantiate using the extension Registry directy. Pretty usefull for creating child items.
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* @param extensionRegistry The extension registry to instantiate
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* @return The instantiated item
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*/
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public Object instantiate(ExtensionRegistry extensionRegistry) {
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return this.instantiate(extensionRegistry, null);
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}
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/**
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* Instantiate.
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*
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* @param id The ID of the extension registry to instantiate
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* @param context The context to register the object in. If it is null, it won't be registered.
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* @return The instantiated item
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*/
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public Object instantiate(String id, IEclipseContext context) {
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// Grab
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ExtensionRegistry extensionRegistry = this.getFirstRegistryWhere(this.getLabel_id(), id);
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if (extensionRegistry == null) {
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System.err.println("Extensión no encontrada: ID: " + id); //$NON-NLS-1$
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System.err.println("Extensiones disponibles para el punto de extension " + this.extensionPoint); //$NON-NLS-1$
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System.err.println(this.toString());
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throw new InvalidExtensionIdentifier(id);
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}
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return this.instantiate(extensionRegistry, context);
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}
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/**
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* Instantiate using the extension Registry directy. Pretty usefull for creating child items.
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* @param extensionRegistry The extension registry to instantiate
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* @param context The context to register the object in. If it is null, it won't be registered.
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* @return The instantiated item
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*/
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public Object instantiate(ExtensionRegistry extensionRegistry, IEclipseContext context) {
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// Grab
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IConfigurationElement conf = extensionRegistry.getConfiguration();
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try {
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Object item = conf.createExecutableExtension(this.getLabel_implementation());
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if (context != null)
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ContextInjectionFactory.inject(item, context);
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return item;
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} catch (CoreException e) {
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e.printStackTrace();
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return null;
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}
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}
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/* (non-Javadoc)
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* @see java.lang.Object#toString()
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*/
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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for (ExtensionRegistry de : this.getAllRegistries()) {
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sb.append(de.toString());
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sb.append("\n"); //$NON-NLS-1$
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}
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return sb.toString();
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}
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/**
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* Gets the label id.
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*
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* @return The label for the extension point ID. The default value is "id".
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*/
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public String getLabel_id() {
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return this.label_id;
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}
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/**
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* Sets the label id.
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*
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* @param label_id The new label for the extension point ID. The default value is "id".
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*/
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public void setLabel_id(String label_id) {
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this.label_id = label_id;
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}
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/**
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* Gets the label implementation.
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*
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* @return The label for the extension point implementation. The default value is "implementation".
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*/
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public String getLabel_implementation() {
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return this.label_implementation;
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}
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/**
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* Sets the label implementation.
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*
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* @param label_implementation The new label for the extension point implementation. The default value is "implementation".
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*/
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public void setLabel_implementation(ExtensionEnum label_implementation) {
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this.setLabel_implementation(label_implementation.toString());
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}
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/**
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* Sets the label implementation.
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*
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* @param label_implementation The new label for the extension point implementation. The default value is "implementation".
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*/
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public void setLabel_implementation(String label_implementation) {
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this.label_implementation = label_implementation;
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}
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/**
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* The Class InvalidExtensionIdentifier.
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*/
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public class InvalidExtensionIdentifier extends RuntimeException {
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/** The Constant serialVersionUID. */
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private static final long serialVersionUID = -517005676614953393L;
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/**
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* Instantiates a new invalid extension identifier.
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*
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* @param text the text
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*/
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private InvalidExtensionIdentifier(String text) {
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super("Identificador de extensión no encontrado: " + text); //$NON-NLS-1$
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}
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}
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/**
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* The Class InvalidKeyIdentifier.
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*/
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private class InvalidKeyIdentifier extends RuntimeException {
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/** The Constant serialVersionUID. */
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private static final long serialVersionUID = 924357389433409796L;
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/**
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* Instantiates a new invalid key identifier.
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*
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* @param text the text
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*/
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private InvalidKeyIdentifier(String text) {
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super("Clave no encontrada en el punto de extensión: " + text); //$NON-NLS-1$
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}
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private InvalidKeyIdentifier(String text, String t2) {
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super("Clave no encontrada en el punto de extensión: " + text + "// " + t2); //$NON-NLS-1$
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}
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}
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}
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