package com.fasterxml.jackson.core.util;

import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.math.BigDecimal;
import java.math.BigInteger;

import com.fasterxml.jackson.core.*;

Helper class that implements delegation pattern for JsonParser, to allow for simple overridability of basic parsing functionality. The idea is that any functionality to be modified can be simply overridden; and anything else will be delegated by default.
/** * Helper class that implements * <a href="http://en.wikipedia.org/wiki/Delegation_pattern">delegation pattern</a> for {@link JsonParser}, * to allow for simple overridability of basic parsing functionality. * The idea is that any functionality to be modified can be simply * overridden; and anything else will be delegated by default. */
public class JsonParserDelegate extends JsonParser {
Delegate object that method calls are delegated to.
/** * Delegate object that method calls are delegated to. */
protected JsonParser delegate; public JsonParserDelegate(JsonParser d) { delegate = d; } @Override public Object getCurrentValue() { return delegate.getCurrentValue(); } @Override public void setCurrentValue(Object v) { delegate.setCurrentValue(v); } /* /********************************************************** /* Public API, configuration /********************************************************** */ @Override public void setCodec(ObjectCodec c) { delegate.setCodec(c); } @Override public ObjectCodec getCodec() { return delegate.getCodec(); } @Override public JsonParser enable(Feature f) { delegate.enable(f); return this; } @Override public JsonParser disable(Feature f) { delegate.disable(f); return this; } @Override public boolean isEnabled(Feature f) { return delegate.isEnabled(f); } @Override public int getFeatureMask() { return delegate.getFeatureMask(); } @Override @Deprecated // since 2.7 public JsonParser setFeatureMask(int mask) { delegate.setFeatureMask(mask); return this; } @Override public JsonParser overrideStdFeatures(int values, int mask) { delegate.overrideStdFeatures(values, mask); return this; } @Override public JsonParser overrideFormatFeatures(int values, int mask) { delegate.overrideFormatFeatures(values, mask); return this; } @Override public FormatSchema getSchema() { return delegate.getSchema(); } @Override public void setSchema(FormatSchema schema) { delegate.setSchema(schema); } @Override public boolean canUseSchema(FormatSchema schema) { return delegate.canUseSchema(schema); } @Override public Version version() { return delegate.version(); } @Override public Object getInputSource() { return delegate.getInputSource(); } /* /********************************************************** /* Capability introspection /********************************************************** */ @Override public boolean requiresCustomCodec() { return delegate.requiresCustomCodec(); } /* /********************************************************** /* Closeable impl /********************************************************** */ @Override public void close() throws IOException { delegate.close(); } @Override public boolean isClosed() { return delegate.isClosed(); } /* /********************************************************** /* Public API, token accessors /********************************************************** */ @Override public JsonToken currentToken() { return delegate.currentToken(); } @Override public int currentTokenId() { return delegate.currentTokenId(); } @Override public JsonToken getCurrentToken() { return delegate.getCurrentToken(); } @Override public int getCurrentTokenId() { return delegate.getCurrentTokenId(); } @Override public boolean hasCurrentToken() { return delegate.hasCurrentToken(); } @Override public boolean hasTokenId(int id) { return delegate.hasTokenId(id); } @Override public boolean hasToken(JsonToken t) { return delegate.hasToken(t); } @Override public String getCurrentName() throws IOException { return delegate.getCurrentName(); } @Override public JsonLocation getCurrentLocation() { return delegate.getCurrentLocation(); } @Override public JsonStreamContext getParsingContext() { return delegate.getParsingContext(); } @Override public boolean isExpectedStartArrayToken() { return delegate.isExpectedStartArrayToken(); } @Override public boolean isExpectedStartObjectToken() { return delegate.isExpectedStartObjectToken(); } @Override public boolean isNaN() throws IOException { return delegate.isNaN(); } /* /********************************************************** /* Public API, token state overrides /********************************************************** */ @Override public void clearCurrentToken() { delegate.clearCurrentToken(); } @Override public JsonToken getLastClearedToken() { return delegate.getLastClearedToken(); } @Override public void overrideCurrentName(String name) { delegate.overrideCurrentName(name); } /* /********************************************************** /* Public API, access to token information, text /********************************************************** */ @Override public String getText() throws IOException { return delegate.getText(); } @Override public boolean hasTextCharacters() { return delegate.hasTextCharacters(); } @Override public char[] getTextCharacters() throws IOException { return delegate.getTextCharacters(); } @Override public int getTextLength() throws IOException { return delegate.getTextLength(); } @Override public int getTextOffset() throws IOException { return delegate.getTextOffset(); } @Override public int getText(Writer writer) throws IOException, UnsupportedOperationException { return delegate.getText(writer); } /* /********************************************************** /* Public API, access to token information, numeric /********************************************************** */ @Override public BigInteger getBigIntegerValue() throws IOException { return delegate.getBigIntegerValue(); } @Override public boolean getBooleanValue() throws IOException { return delegate.getBooleanValue(); } @Override public byte getByteValue() throws IOException { return delegate.getByteValue(); } @Override public short getShortValue() throws IOException { return delegate.getShortValue(); } @Override public BigDecimal getDecimalValue() throws IOException { return delegate.getDecimalValue(); } @Override public double getDoubleValue() throws IOException { return delegate.getDoubleValue(); } @Override public float getFloatValue() throws IOException { return delegate.getFloatValue(); } @Override public int getIntValue() throws IOException { return delegate.getIntValue(); } @Override public long getLongValue() throws IOException { return delegate.getLongValue(); } @Override public NumberType getNumberType() throws IOException { return delegate.getNumberType(); } @Override public Number getNumberValue() throws IOException { return delegate.getNumberValue(); } /* /********************************************************** /* Public API, access to token information, coercion/conversion /********************************************************** */ @Override public int getValueAsInt() throws IOException { return delegate.getValueAsInt(); } @Override public int getValueAsInt(int defaultValue) throws IOException { return delegate.getValueAsInt(defaultValue); } @Override public long getValueAsLong() throws IOException { return delegate.getValueAsLong(); } @Override public long getValueAsLong(long defaultValue) throws IOException { return delegate.getValueAsLong(defaultValue); } @Override public double getValueAsDouble() throws IOException { return delegate.getValueAsDouble(); } @Override public double getValueAsDouble(double defaultValue) throws IOException { return delegate.getValueAsDouble(defaultValue); } @Override public boolean getValueAsBoolean() throws IOException { return delegate.getValueAsBoolean(); } @Override public boolean getValueAsBoolean(boolean defaultValue) throws IOException { return delegate.getValueAsBoolean(defaultValue); } @Override public String getValueAsString() throws IOException { return delegate.getValueAsString(); } @Override public String getValueAsString(String defaultValue) throws IOException { return delegate.getValueAsString(defaultValue); } /* /********************************************************** /* Public API, access to token values, other /********************************************************** */ @Override public Object getEmbeddedObject() throws IOException { return delegate.getEmbeddedObject(); } @Override public byte[] getBinaryValue(Base64Variant b64variant) throws IOException { return delegate.getBinaryValue(b64variant); } @Override public int readBinaryValue(Base64Variant b64variant, OutputStream out) throws IOException { return delegate.readBinaryValue(b64variant, out); } @Override public JsonLocation getTokenLocation() { return delegate.getTokenLocation(); } @Override public JsonToken nextToken() throws IOException { return delegate.nextToken(); } @Override public JsonToken nextValue() throws IOException { return delegate.nextValue(); } @Override public void finishToken() throws IOException { delegate.finishToken(); } @Override public JsonParser skipChildren() throws IOException { delegate.skipChildren(); // NOTE: must NOT delegate this method to delegate, needs to be self-reference for chaining return this; } /* /********************************************************** /* Public API, Native Ids (type, object) /********************************************************** */ @Override public boolean canReadObjectId() { return delegate.canReadObjectId(); } @Override public boolean canReadTypeId() { return delegate.canReadTypeId(); } @Override public Object getObjectId() throws IOException { return delegate.getObjectId(); } @Override public Object getTypeId() throws IOException { return delegate.getTypeId(); } }