X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.jcr%2Fsrc%2Forg%2Fargeo%2Fjcr%2FJcr.java;h=72e325d35a40c40ad22a712ae7561fd33ae6ed87;hb=98ff62f2df01366777fda9b4dbe7586b0cd45252;hp=6f0e39d8298759db33affea0dc57d9a69b7bb47f;hpb=77bc62e8d3a92815a6ccbe96839f88344b5465ac;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.jcr/src/org/argeo/jcr/Jcr.java b/org.argeo.jcr/src/org/argeo/jcr/Jcr.java
index 6f0e39d82..72e325d35 100644
--- a/org.argeo.jcr/src/org/argeo/jcr/Jcr.java
+++ b/org.argeo.jcr/src/org/argeo/jcr/Jcr.java
@@ -1,8 +1,13 @@
 package org.argeo.jcr;
 
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.math.BigDecimal;
+import java.text.MessageFormat;
 import java.time.Instant;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Calendar;
 import java.util.Collections;
 import java.util.Date;
@@ -22,12 +27,16 @@ import javax.jcr.Session;
 import javax.jcr.Value;
 import javax.jcr.Workspace;
 import javax.jcr.nodetype.NodeType;
+import javax.jcr.query.Query;
+import javax.jcr.query.QueryManager;
 import javax.jcr.security.Privilege;
 import javax.jcr.version.Version;
 import javax.jcr.version.VersionHistory;
 import javax.jcr.version.VersionIterator;
 import javax.jcr.version.VersionManager;
 
+import org.apache.commons.io.IOUtils;
+
 /**
  * Utility class whose purpose is to make using JCR less verbose by
  * systematically using unchecked exceptions and returning <code>null</code>
@@ -128,6 +137,14 @@ public class Jcr {
 		}
 	}
 
+	/**
+	 * @see Node#getParent()
+	 * @throws JcrException caused by {@link RepositoryException}
+	 */
+	public static String getParentPath(Node node) {
+		return getPath(getParent(node));
+	}
+
 	/**
 	 * Whether this node is the root node.
 	 * 
@@ -186,6 +203,48 @@ public class Jcr {
 		}
 	}
 
+	/**
+	 * Returns the node name with its current index (useful for re-ordering).
+	 * 
+	 * @see Node#getName()
+	 * @see Node#getIndex()
+	 * @throws JcrException caused by {@link RepositoryException}
+	 */
+	public static String getIndexedName(Node node) {
+		try {
+			return node.getName() + "[" + node.getIndex() + "]";
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot get name of " + node, e);
+		}
+	}
+
+	/**
+	 * @see Node#getProperty(String)
+	 * @throws JcrException caused by {@link RepositoryException}
+	 */
+	public static Property getProperty(Node node, String property) {
+		try {
+			if (node.hasProperty(property))
+				return node.getProperty(property);
+			else
+				return null;
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot get property " + property + " of " + node, e);
+		}
+	}
+
+	/**
+	 * @see Node#getIndex()
+	 * @throws JcrException caused by {@link RepositoryException}
+	 */
+	public static int getIndex(Node node) {
+		try {
+			return node.getIndex();
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot get index of " + node, e);
+		}
+	}
+
 	/**
 	 * If node has mixin {@link NodeType#MIX_TITLE}, return
 	 * {@link Property#JCR_TITLE}, otherwise return {@link #getName(Node)}.
@@ -274,6 +333,85 @@ public class Jcr {
 		}
 	}
 
+	/**
+	 * Add a node to this parent, setting its primary type and its mixins.
+	 * 
+	 * @param parent      the parent node
+	 * @param name        the name of the node, if <code>null</code>, the primary
+	 *                    type will be used (typically for XML structures)
+	 * @param primaryType the primary type, if <code>null</code>
+	 *                    {@link NodeType#NT_UNSTRUCTURED} will be used.
+	 * @param mixins      the mixins
+	 * @return the created node
+	 * @see Node#addNode(String, String)
+	 * @see Node#addMixin(String)
+	 */
+	public static Node addNode(Node parent, String name, String primaryType, String... mixins) {
+		if (name == null && primaryType == null)
+			throw new IllegalArgumentException("Both node name and primary type cannot be null");
+		try {
+			Node newNode = parent.addNode(name == null ? primaryType : name,
+					primaryType == null ? NodeType.NT_UNSTRUCTURED : primaryType);
+			for (String mixin : mixins) {
+				newNode.addMixin(mixin);
+			}
+			return newNode;
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot add node " + name + " to " + parent, e);
+		}
+	}
+
+	/**
+	 * Add an {@link NodeType#NT_BASE} node to this parent.
+	 * 
+	 * @param parent the parent node
+	 * @param name   the name of the node, cannot be <code>null</code>
+	 * @return the created node
+	 * 
+	 * @see Node#addNode(String)
+	 */
+	public static Node addNode(Node parent, String name) {
+		if (name == null)
+			throw new IllegalArgumentException("Node name cannot be null");
+		try {
+			Node newNode = parent.addNode(name);
+			return newNode;
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot add node " + name + " to " + parent, e);
+		}
+	}
+
+	/**
+	 * Add mixins to a node.
+	 * 
+	 * @param node   the node
+	 * @param mixins the mixins
+	 * @return the created node
+	 * @see Node#addMixin(String)
+	 */
+	public static void addMixin(Node node, String... mixins) {
+		try {
+			for (String mixin : mixins) {
+				node.addMixin(mixin);
+			}
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot add mixins " + Arrays.asList(mixins) + " to " + node, e);
+		}
+	}
+
+	/**
+	 * Removes this node.
+	 * 
+	 * @see Node#remove()
+	 */
+	public static void remove(Node node) {
+		try {
+			node.remove();
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot remove node " + node, e);
+		}
+	}
+
 	/**
 	 * @return the node with htis id or <code>null</node> if not found
 	 * @see Session#getNodeByIdentifier(String)
@@ -298,11 +436,19 @@ public class Jcr {
 	public static void set(Node node, String property, Object value) {
 		try {
 			if (!node.hasProperty(property)) {
-				if (value != null)
-					node.setProperty(property, value.toString());
+				if (value != null) {
+					if (value instanceof List) {// multiple
+						List<?> lst = (List<?>) value;
+						String[] values = new String[lst.size()];
+						for (int i = 0; i < lst.size(); i++) {
+							values[i] = lst.get(i).toString();
+						}
+						node.setProperty(property, values);
+					} else {
+						node.setProperty(property, value.toString());
+					}
+				}
 				return;
-				// throw new IllegalArgumentException("No property " + property + " in " +
-				// node);
 			}
 			Property prop = node.getProperty(property);
 			if (value == null) {
@@ -310,6 +456,27 @@ public class Jcr {
 				return;
 			}
 
+			// multiple
+			if (value instanceof List) {
+				List<?> lst = (List<?>) value;
+				String[] values = new String[lst.size()];
+				// TODO better cast?
+				for (int i = 0; i < lst.size(); i++) {
+					values[i] = lst.get(i).toString();
+				}
+				if (!prop.isMultiple())
+					prop.remove();
+				node.setProperty(property, values);
+				return;
+			}
+
+			// single
+			if (prop.isMultiple()) {
+				prop.remove();
+				node.setProperty(property, value.toString());
+				return;
+			}
+
 			if (value instanceof String)
 				prop.setValue((String) value);
 			else if (value instanceof Long)
@@ -415,20 +582,11 @@ public class Jcr {
 			if (node.hasProperty(property)) {
 				Property p = node.getProperty(property);
 				try {
-					switch (p.getType()) {
-					case PropertyType.STRING:
-						return (T) node.getProperty(property).getString();
-					case PropertyType.DOUBLE:
-						return (T) (Double) node.getProperty(property).getDouble();
-					case PropertyType.LONG:
-						return (T) (Long) node.getProperty(property).getLong();
-					case PropertyType.BOOLEAN:
-						return (T) (Boolean) node.getProperty(property).getBoolean();
-					case PropertyType.DATE:
-						return (T) node.getProperty(property).getDate();
-					default:
-						return (T) node.getProperty(property).getString();
+					if (p.isMultiple()) {
+						throw new UnsupportedOperationException("Multiple values properties are not supported");
 					}
+					Value value = p.getValue();
+					return (T) get(value);
 				} catch (ClassCastException e) {
 					throw new IllegalArgumentException(
 							"Cannot cast property of type " + PropertyType.nameFromValue(p.getType()), e);
@@ -441,6 +599,86 @@ public class Jcr {
 		}
 	}
 
+	/**
+	 * Get a multiple property as a list, doing a best effort to cast it as the
+	 * target list.
+	 * 
+	 * @return the value of {@link Node#getProperty(String)}.
+	 * @throws IllegalArgumentException if the value could not be cast
+	 * @throws JcrException             in case of unexpected
+	 *                                  {@link RepositoryException}
+	 */
+	public static <T> List<T> getMultiple(Node node, String property) {
+		try {
+			if (node.hasProperty(property)) {
+				Property p = node.getProperty(property);
+				return getMultiple(p);
+			} else {
+				return null;
+			}
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot retrieve multiple values property " + property + " from " + node, e);
+		}
+	}
+
+	/**
+	 * Get a multiple property as a list, doing a best effort to cast it as the
+	 * target list.
+	 */
+	@SuppressWarnings("unchecked")
+	public static <T> List<T> getMultiple(Property p) {
+		try {
+			List<T> res = new ArrayList<>();
+			if (!p.isMultiple()) {
+				res.add((T) get(p.getValue()));
+				return res;
+			}
+			Value[] values = p.getValues();
+			for (Value value : values) {
+				res.add((T) get(value));
+			}
+			return res;
+		} catch (ClassCastException | RepositoryException e) {
+			throw new IllegalArgumentException("Cannot get property " + p, e);
+		}
+	}
+
+	/** Cast a {@link Value} to a standard Java object. */
+	public static Object get(Value value) {
+		Binary binary = null;
+		try {
+			switch (value.getType()) {
+			case PropertyType.STRING:
+				return value.getString();
+			case PropertyType.DOUBLE:
+				return (Double) value.getDouble();
+			case PropertyType.LONG:
+				return (Long) value.getLong();
+			case PropertyType.BOOLEAN:
+				return (Boolean) value.getBoolean();
+			case PropertyType.DATE:
+				return value.getDate();
+			case PropertyType.BINARY:
+				binary = value.getBinary();
+				byte[] arr = null;
+				try (InputStream in = binary.getStream(); ByteArrayOutputStream out = new ByteArrayOutputStream();) {
+					IOUtils.copy(in, out);
+					arr = out.toByteArray();
+				} catch (IOException e) {
+					throw new RuntimeException("Cannot read binary from " + value, e);
+				}
+				return arr;
+			default:
+				return value.getString();
+			}
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot cast value from " + value, e);
+		} finally {
+			if (binary != null)
+				binary.dispose();
+		}
+	}
+
 	/**
 	 * Retrieves the {@link Session} related to this node.
 	 * 
@@ -661,6 +899,75 @@ public class Jcr {
 		}
 	}
 
+	// QUERY
+	/** Creates a JCR-SQL2 query using {@link MessageFormat}. */
+	public static Query createQuery(QueryManager qm, String sql, Object... args) {
+		// fix single quotes
+		sql = sql.replaceAll("'", "''");
+		String query = MessageFormat.format(sql, args);
+		try {
+			return qm.createQuery(query, Query.JCR_SQL2);
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot create JCR-SQL2 query from " + query, e);
+		}
+	}
+
+	/** Executes a JCR-SQL2 query using {@link MessageFormat}. */
+	public static NodeIterator executeQuery(QueryManager qm, String sql, Object... args) {
+		Query query = createQuery(qm, sql, args);
+		try {
+			return query.execute().getNodes();
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot execute query " + sql + " with arguments " + Arrays.asList(args), e);
+		}
+	}
+
+	/** Executes a JCR-SQL2 query using {@link MessageFormat}. */
+	public static NodeIterator executeQuery(Session session, String sql, Object... args) {
+		QueryManager queryManager;
+		try {
+			queryManager = session.getWorkspace().getQueryManager();
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot get query manager from session " + session, e);
+		}
+		return executeQuery(queryManager, sql, args);
+	}
+
+	/**
+	 * Executes a JCR-SQL2 query using {@link MessageFormat}, which must return a
+	 * single node at most.
+	 * 
+	 * @return the node or <code>null</code> if not found.
+	 */
+	public static Node getNode(QueryManager qm, String sql, Object... args) {
+		NodeIterator nit = executeQuery(qm, sql, args);
+		if (nit.hasNext()) {
+			Node node = nit.nextNode();
+			if (nit.hasNext())
+				throw new IllegalStateException(
+						"Query " + sql + " with arguments " + Arrays.asList(args) + " returned more than one node.");
+			return node;
+		} else {
+			return null;
+		}
+	}
+
+	/**
+	 * Executes a JCR-SQL2 query using {@link MessageFormat}, which must return a
+	 * single node at most.
+	 * 
+	 * @return the node or <code>null</code> if not found.
+	 */
+	public static Node getNode(Session session, String sql, Object... args) {
+		QueryManager queryManager;
+		try {
+			queryManager = session.getWorkspace().getQueryManager();
+		} catch (RepositoryException e) {
+			throw new JcrException("Cannot get query manager from session " + session, e);
+		}
+		return getNode(queryManager, sql, args);
+	}
+
 	/** Singleton. */
 	private Jcr() {